Mouth Breathing & BBT

Hiya! I'm suffering with bad hayfever at the moment & have a really blocked nose. The last 2 days I've woken up with dry lips & mouth & out of breath from breathing through my mouth instead of my nose! I've had 2 super low temperatures for this point in my cycle so disregarded them because of this. What do you think? Am I just looking for an excuse for my lower temps or am I right to discard them? My chart was looking so good as well!! X​